Questions tagged [image-format]

Questions about image file formats, a standardized means of organizing and storing digital images. Image files are composed of either pixel or vector (geometric) data. Common image format include JPEG, PNG, GIF, TIFF, EPS, SVG and many more. Ask anything about file formats that's relevant to graphic design.

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33 votes
4 answers
31k views

What are the differences between vector graphics and raster graphics?

I understand from prior knowledge that there are two different image format / composition options available for creating images; raster and vector. I would like to understand more about them, such as ...
27 votes
9 answers
118k views

Facebook: Ways to preserve image quality of uploaded images?

After uploading an image, Facebook converts it to a new image. Their conversion process introduces artifacts and mottling to the magenta-ish parts of the image. Original image: Facebook's ...
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43 votes
13 answers
4k views

What web graphics formats to use?

Web sites can contain JPEG, GIF,PNG, SVG format graphics. Which ones should be used, and when?
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32 votes
5 answers
12k views

Why are raster images still used when vector images have so many advantages?

I have read some posts and see many advantages of using vector images when compared to raster images: They can be zoomed or scaled at any ratio. File-size efficiency. Because vector image only ...
  • 565
4 votes
2 answers
3k views

Delivering a graphic design to a customer

I work as a photographer but recently I've been working on stretching my skills and took on a project to create a graphic design for a non-profit. The designs are complete and the organization was ...
  • 455
14 votes
9 answers
7k views

What programs can be used to make animations?

I am specifically interested in software that can be used to combine existing sets of images (frames in the animation) into an animation. Having the ability to add transitions/effects between the ...
37 votes
6 answers
40k views

Can I reduce the file size of an SVG to be closer to its JPEG equivalent?

I have an image that I’m using on a website. I would like to use an SVG so that it can be any size and still look crisp. This dropbox contains the SVG file as well as the original Illustrator file. ...
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15 votes
4 answers
31k views

What formats supporting animation are suitable for the web?

What formats supporting animation are suitable for the web and what are the pros and cons of each.
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17 votes
3 answers
8k views

Why do people use JPG images?

I see JPG images everywhere. But why? PNG files have opacity, while JPGs do not. I've tried exporting some images to PNG and JPG to compare size, and they both either match up or the PNG is smaller(...
15 votes
5 answers
35k views

How to convert a normal photo into an equirectangular image?

I have a regular panorama image. How do I convert it into an equirectangular picture (normal → equirectangular)? Most results I find on Google are a conversion in the opposite direction (...
3 votes
5 answers
62k views

Illustrator: Converting a letterhead design to Word

I created this letterhead for a client in Illustrator and it got approved. It now needs to get converted to a Word document for internal usage. What's the best way to make this conversion?
13 votes
3 answers
58k views

What unique benefits does the EPS format provide?

Reading this excellent question regarding logo export formats, and it made me want to ask a question that was a little bit more narrowly focused than that one. I know when to use a GIF and when to ...
  • 16.3k
2 votes
4 answers
8k views

What is the best way to create light-weight PNG images?

I want to create light weight PNG images with good quality. Can anyone suggest the best way...Note: Need to use these PNG images in android app designing.
5 votes
2 answers
9k views

Embedding pdf in illustrator

So, I'm using adobe illustrator for creating vectorial figures, mainly for graphs. In illustrator, creating graphs is not so well implemented, so I'm using another tool to make them (e.g. R, xmgrace, ...
3 votes
4 answers
73k views

How to Remove Jagged Edge (Aliasing) on a Straight Diagonal Line

This is 120px X 283px dimension, PNG image. When using it in website the same image dimension is set through css but in the browser view it is showing like a saw like this Is it possible to draw ...
4 votes
1 answer
1k views

Is SVG conversion to PDF lossless and deterministic?

Assuming an SVG is converted to PDF vector paths. Deterministic: Will program A (e.g. Inkscape) produce the same PDF for a given SVG as program B (e.g. Ghostscript)? Lossless: In the same program, ...
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3 votes
1 answer
10k views

What image file format is used by Autodesk Sketchbook Mobile?

I have been using Sketchbook Mobile on an android phone a little bit and, being an android (me and the device), I have located the single save file the program allows and make backups of that file on ...
  • 9,041
2 votes
5 answers
2k views

What is the purpose of the resolution property of images (when creating/editing)?

I want to check something I don't quite understand with the size/quality properties of an image. OK, as much as I understand, the size of an image you create in Photoshop, for example, will determine ...
2 votes
1 answer
10k views

Photoshop CS6 export to RGB 565 format

I googled this a bit and found an older post on the Adobe forums but that's for Photoshop CS3. I was looking for the Advanced Mode option but couldn't find it. Is it still possible to save a bitmap ...
1 vote
4 answers
615 views

Which raster image format is better for digitally displaying images when there is no transparency; JPEG or PNG?

I'm trying to determine which format is better to use when there is no transparency in an image. More importantly though, I'm trying to figure out when it's better to use one over the other. From ...
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1 vote
1 answer
1k views

How to Batch Export All Directory Contents to PNG-8, Overwriting Existing Files?

Based on some preliminary manual testing, I've found that exporting as png-8 as one might expect provides significant file size reduction. One of my test images went from 58.8 kb to 10.7 kb. With a ...
0 votes
1 answer
9k views

What does 8 bit alpha (PNG) mean?

I am trying to follow specs for iTunes app graphic. The requirements state: 72ppi, rgb,flattended, NO transparency High qualtiy PNG plus 8-bit alpha. Everything I read about alpha is WITH ...
  • 1
0 votes
1 answer
835 views

File size increases with resolution when exporting to PNG

Whenever I am trying to increase the resolution of the logo I am exporting from Illustrator the file size gets increased automatically, I would like to know if I could increase the resolution while ...